Dark Fire, he's in the Netherlands Germany. Don't be a futz.
Anyway, chat can have its use for quickfire conversations and wouldn't be used for instruction - I wouldn't use it that way, but I might ask questions from someone. It depends on how it's used. If someone doesn't use the chat, no one could force them. But, if two or more people wanted to discuss something rather right then and there with the details at hand, chat is useful.